package socket3;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;
import java.nio.charset.StandardCharsets;

public class Server {
    private ServerSocket serverSocket;
    public  Server(){
        try {
            System.out.println("正在启动服务端...");
            serverSocket =new ServerSocket(8088);
            System.out.println("服务端启动完毕");
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
    public void start(){
        try {
            while (true) {
                System.out.println("等待客户端连接");
                Socket socket = serverSocket.accept();
                System.out.println("一个客户端连接了");
                ClientHandler handler = new ClientHandler(socket);
                Thread t = new Thread(handler);
                t.start();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

    public static void main(String[] args) {
        Server server = new Server();
        server.start();
    }
    private class ClientHandler implements Runnable{
        private Socket socket;
        private String host;//记录该客户端的IP地址
        private String nickname;//记录该客户端的昵称

        public ClientHandler(Socket socket){
            this.socket = socket;
            //通过socket获取远端(客户端)的ip地址
            host = socket.getInetAddress().getHostAddress();
        }

        public void run(){
            try {
                /*
                Socket提供的方法:
                InputStream getInputStream()
                通过该输入流可以读取与当前Socket建立连接的对方计算机发送过来的字节
             */
                InputStream in = socket.getInputStream();
                InputStreamReader isr = new InputStreamReader(in, StandardCharsets.UTF_8);
                BufferedReader br = new BufferedReader(isr);

                //首先单独读取客户端发送过来的第一行字符串，它应当是客户端的昵称
                nickname = br.readLine();


                String message;

                while ((message = br.readLine()) != null) {

                    System.out.println(nickname+"["+host +"]说:"+message);
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}
